Scientific Name
Uraspis helvola  
Uraspis helvola白舌尾甲鰺
by: Lab of Fish Ecol. and Evo., BRCAS
Author (Forster, 1801) Depth 50 - 300M
Chinese 白舌尾甲鰺 Poisonous Fish No 
Family_Chinese 鰺科 Economic Fish Yes 
Family F364 Carangidae Edible Fish Yes  Chinese In Mainland China 白舌尾甲鰺 
Max Length 58 cm  Aquarium Fish No  Common Name 瓜仔、沖鰺、黑面甘、黑魽、甘仔魚(臺東)、白鯌仔(澎湖)、瓜仔(澎湖) 
Distribution in World India Ocean to Pacific Ocean   Distribution in Taiwan East、South、North、PonFu、ShaoLiuChew 
Habitats Benthos、Coastal  Holotype Locality Society Is. 
Synonyms Caranx helvolus, Caranx micropterus, Leucoglossa candens, Scomber helvolus, Uraspis helvolus, Uraspis secunda   
Reference 臺灣魚類誌(沈等, 1993)  沈世傑 編 Shih-Chieh Shen ed. 1993 Carpenter, K. E. etc. 1999 Lin, P. L. etc. 1999 
Specimen List ASIZP0056695. ASIZP0058191. ASIZP0066137. ASIZP0066416. ASIZP0066490. ASIZP0078293. ASIZP0078301. ASIZP0801366. ASIZP0801367. ASIZP0801369. ASIZP0807179. ASIZP0807187. ASIZP0911366. ASIZP0911367. ASIZP0911369. ASIZP0917179. ASIZP0917187. FRIP21555. NMMBP03025. NMMBP05212. NMMSTP00483.  
Barcode2008-03-25,Kui-Ching Hsu,CO1,100% 2012-01-02,柯慧玲,CO1,100% 2012-01-02,柯慧玲,CO1,100% 2016-01-26,Chia-Hao Chang,CO1,100% 2016-01-26,Chia-Hao Chang,CO1,100%
Common Name White mouth crevalle; Whitemouth jack; Whitetongue Jack; Cottonmouth jack; Jack 
Redlist Status NL Not in IUCN Redlist     
Characteristic D. VII-VIII (the posterior 1 embedded and not apparent), I+28-29; A. 0 (detached spines embedded and not apparent), I+21-22; P. i+20-21; G.R. 5-6+14-15; CLS. 54-66 scutes; SLS. 33-37 all scutes; vertebrate 10+14. Adipose eyelid rudimentary. Breast naked ventrally to origin of pelvic fins; laterally, naked area of breast separated from naked base of pectoral fin by a broad band of scales. Lateral line becoming to below 12-13th ray of the second dorsal fin. The posterior 1-3 spine of first dorsal fin embedded and not apparent with growth; free anal spines only exist in juvenile. Tongue, roof and floor of mouth white or cream-coloured,the rest blue-black; head dusky to black, with a large, diffuse black opercular blotch; body dusky to black dorsally, lighter below and with 6 or 7 wide, dark bands and narrow pale interspaces (faint bands evident in specimens as large as 25 cm; in specimens smaller than 10 cm bands may extend onto second dorsal and anal fins); second dorsal and anal fins hyaline to black; the anal fin commonly, and the second dorsal fin occasionally with tips of the falcate lobe and fin margin pale; pelvic fins generally black in specimens smaller than 10 cm fork length, rapidly becoming pale whitish at larger sizes; caudal fin pale yellowish dusky with trailing edges and tips of lobes blackish.
habitats A pelagic and demersal species found in sandy bottoms at the foot of the edge of the outer reefs, continental coasts and around islands. Solitary or forming small schools. Mainly nocturnal. 
Distribution Widely distributed in warm waters of Indo-Pacific. It is occasionally in southern Taiwanese waters. 
Utility Marketed fresh and salted or dried.